The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 27, 2008
Filed:
Dec. 07, 2004
Applicants:
Yutaka Sasaki, Tochigi, JP;
Katsuyuki Yoshida, Tochigi, JP;
Inventors:
Yutaka Sasaki, Tochigi, JP;
Katsuyuki Yoshida, Tochigi, JP;
Assignee:
Showa Corporation, Saitama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D 5/06 (2006.01); F16H 1/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a motor-driven power steering apparatus for a vehicle in which a worm wheel of a worm gear type speed reduction mechanism is fixed to a pinion shaft of a rack and pinion mechanism, a direction of a torsion angle β of a helical pinion provided in the pinion shaft is set to be opposite to a direction of a tooth lead angle γ of the worm wheel.